X10's security certificate has expired. Hopefully they'll renew it shortly. In the meantime, the only browser I've found that will actually let you turn off SSL checking is Firefox which is what I've switched to for this forum till it's fixed. In Firefox go to 'Settings' then 'Privacy & Security' then scroll way down and UNcheck 'Query OSCP...' under 'Certificates' and under 'HTTPS-Only Mode' CHECK 'Don't Enable...' and you'll be good to go.
I couldn't make that happen in Chrome but I'm sure there's a way.